Configuring the 4-Port Channelized COC3/STM1 Circuit Emulation PIC Operating Mode
T1/E1 Mode Selection
All ATM interfaces are either T1 or E1 channels within the COC3/CSTM1 hierarchy. Each COC3 can be partitioned as 3 COC1 slices, each of which in turn can be partitioned further into 28 ATM interfaces and the size of each interface created is that of a T1. Each CS1 can be portioned as 1 CAU4, which can be further partitioned as E1 sized ATM interfaces.
To configure the T1/E1 mode selection, keep the following in mind:
- To create coc3-fpc/pic/port or cstm1-fpc/pic/port interfaces, chassisd will look for configuration at the [edit chassis fpc fpc-slot pic pic-slot port port framing (sonet | sdh)] hierarchy level. If the sdh option is specified, chassisd will create a cstm1-fpc/pic/port interface. Otherwise, chassisd will create coc3-fpc/pic/port interfaces.
- Only interface coc1 can be created from coc3, and t1 can be created from coc1.
- Only interface cau4 can be created from cstm1, and e1 can be created from cau4.
Figure 1 and Figure 2 illustrate the possible interfaces that can be created on the 4-port Channelized COC3/STM1 Circuit Emulation PIC.
Figure 1: 4-Port Channelized COC3/STM1 Circuit Emulation PIC Possible Interfaces (T1 Size)
Figure 2: 4-Port Channelized COC3/STM1 Circuit Emulation PIC Possible Interfaces (E1 Size)
Subrate T1 is not supported.
ATM NxDS0 grooming is not supported.
External and internal loopback of T1/E1 (on ct1/ce1 physical interfaces) can be configured using the sonet-options statement. By default, no loopback is configured.
Configuring a Port for SONET or SDH Mode on a 4-Port Channelized COC3/STM1 Circuit Emulation PIC
Each port of the 4-port Channelized COC3/STM1 Circuit Emulation PIC can be independently configured for either SONET or SDH mode. To configure a port for either SONET or SDH mode, enter the framing (sonet | sdh) statement at the [chassis fpc number pic number port number] hierarchy level.
The following example shows how to configure FPC 1, PIC 1, and port 0 for SONET mode and port 1 for SDH mode:
Or specify the following:
Configuring an ATM Interface on a COC1
To create an ATM interface on a COC1, enter the following command:
To create an ATM interface on CAU4, enter the following command:
Or specify the following:
You can use the show chassis hardware command to display a list of the installed PICs.
Published: 2012-12-07
Published: 2012-12-07
